Mad about him: Hamm a fan of Timberlake's style

"Mad Men" star Jon Hamm is going mad over Justin Timberlake's suit and tie - the song and the singer's style.

"I'm a big fan of Justin Timberlake," Hamm said in a recent interview. "I think he's a trendsetter, as they say. But he's always been kind of a natty dresser."

The 42-year-old actor, who says he has an "appreciation for fashion," returns as womanizing adman Don Draper when season six premieres April 7 on AMC.

Seeing "Mad Men" style infiltrate pop culture - from Taylor Swift's mod minidress on the March cover of Elle magazine to Timberlake's ode to old Hollywood glamour with his latest hit, "Suit & Tie," is the ultimate compliment for Hamm.

"It's nice that our show has had that sort of serendipitous resonance with fashion," he said. "I think it's great. I think it's really cool."

As for Timberlake, Hamm believes the pop star is "a very fashion-forward kind of guy," although the Grammy winner is guilty of at least one "fashion don't."

"That one unfortunate picture of him in that denim tuxedo excused," Hamm said with a smile, referring to Timberlake's all-denim ensemble at the 2001 American Music Awards.